# statistics

posted by .

The objective of statistics is best described as:
A) To make inferences about a sample based on information we get from a population
B) To use population mean, ƒÝ as an estimate of the sample mean,
C) To make inferences about a population based on information we get from a sample taken from the population
D) To make inferences about a sample with a high degree of reliability

• statistics -

The answer here is C. We are looking to make in inference about a broad group (the population) by observing a small cross section of the group (the sample).

Take, for example, the recent Presidential Polls. Groups like Zogby will call a sample of 500 people to ask them who they might vote for. Then they will make inferences about the general population of the United States about who is leading the race, etc.

Hope that helps :)

## Similar Questions

1. ### Math

The objective of statistics is best described as: A) To make inferences about a sample based on information we get from a population B) To use population mean, ƒÝ as an estimate of the sample mean, C) To make inferences about a population …
2. ### statistics

An important indicator of lung function is forced expiratory volume(FEV), which is the volume of air that a person can expire in one second. Dr. Jones plans to measure FEv in a random sample of n young women from a certain population, …
3. ### Statistics

Calculate the following: a) Determine the sample size necessary to estimate a population mean to within 1 with a 90% confidence given that the population standard deviation is 10. b) Suppose that the sample was calculated at 150. Estimate …
4. ### Statistics

he Oil Price Information Center reports the mean price per gallon of regular gasoline is \$ 3.79 with a population standard deviation of \$ 0.18. Assume a random sample of 40 gasoline stations is selected and their mean cost for regular …

The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 16 people reveals the mean yearly consumption to be 60 gallons with a standard deviation of 20 gallons. a. What is the value of the population …
6. ### statistics

Use the given information to find the minimum sample size required to estimate an unknown population mean u. How many adults must be randomly selected to estimate the mean FICO (credit rating)score of working adults in a country?
7. ### Statistics

Dr. Hernandez plans to measure FEV in a random sample of n young women from a certain popu- lation, and to use the sample mean y ̄ as an estimate of the population mean. Let A be the event that Hernandez’s sample mean will be …
8. ### statistics

A population has a mean of 300 and a standard deviation of 50. Suppose a sample of size 125 is selected and is used to estimate . What is the probability that the sample mean will be within +/- 3 of the population mean (to 4 decimals)?
9. ### statistics

Use the given information to find the minimum sample size required to estimate an unknown population mean μ. How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters?
10. ### Statistics

You are interested in estimating the mean of a population. you plan to take a random sample from the population and use the samples mean as an estimate of population mean. Assuming that the population from which you select your sample …

More Similar Questions